The Actual Time Difference, and Why It Moves Twice a Year
India Standard Time is UTC+5:30 and does not observe daylight saving. U.S. Eastern Time (EST in winter, EDT in summer) does. That means the gap between New York and Pune is 10 hours 30 minutes in winter and 9 hours 30 minutes in summer, and it changes on the U.S. side twice a year without anyone in India doing anything (time zone offsets, timeanddate.com).
The Philippines is UTC+8, also with no daylight saving, putting Manila 13 hours ahead of EST in winter and 12 in summer.
This matters more than it sounds. A meeting fixed at 8 AM EST quietly moves an hour later in India every March, which is how a schedule that worked in February starts ending at 11:30 PM in April.
| U.S. Eastern / EST (winter) | India (IST) | Philippines (PHT) |
|---|---|---|
| 8:00 AM | 6:30 PM | 9:00 PM |
| 9:00 AM | 7:30 PM | 10:00 PM |
| 12:00 PM | 10:30 PM | 1:00 AM |
| 5:00 PM | 3:30 AM | 6:00 AM |
For U.S. West Coast companies, subtract three hours from the Eastern column. An 8 AM PST start is 9:30 PM IST, which is a later and often harder shift than the EST equivalent. West Coast teams usually settle on 8 AM to 1 PM PST, which is 9:30 PM to 2:30 AM IST.
Configuring the Overlap Window
The overlap window is the block of hours when both sides are online at once. Configure it per role, before the first day. Changing it later means renegotiating someone's sleep.
Wide overlap - roles with constant live contact. Developers in review cycles, operations, customer support. The remote professional works evenings and into the night to cover the U.S. business day. This is the most demanding configuration for the employee and should be used where it is genuinely needed, not by default.
Partial overlap - four to five hours, U.S. morning. 8 AM to 1 PM EST covers standups, ceremonies, and the day's decisions, and leaves the rest of the shift for focused work. This suits financial analysts, CAD drafters, document controllers, and back-office operations.
Async-first - no fixed window, 24-hour deliverable cycle. Drawing production, data entry, content production, report generation. Real-time contact is occasional rather than scheduled.
For U.S. West Coast teams, the kinder configuration is 6 AM to 10 AM PST with India (7:30 PM to 11:30 PM IST) rather than pushing the overlap later into the India night.
There is no single correct number here, and treating one configuration as a default is how the wrong role ends up on a night shift it never needed. Engineering placements through F5 commonly run four to eight hours of daily overlap; support and operations roles run wider; delivery-based roles run narrower. The window follows the work.
The Handoff: What Actually Crosses the Window
Every guide to time zones tells you to configure an overlap window. Almost none tell you what has to travel across it. The handoff note is the artifact that decides whether the next shift starts working or starts waiting.
A daily end-of-day write-up has one job: make the next person productive without a reply. That means it answers questions before they are asked.
What finished, and where it is. Not "finished the export module" but the branch, the ticket, the environment it is deployed to. The reviewer should not have to search.
What is in progress, and how far. A percentage is useless. "Schema is done, migration written, not yet run against staging" tells the reader exactly where to pick it up if they need to.
What is blocked, who can unblock it, and the actual question. This is the line that matters most and the one most often written badly. "Blocked on design" costs a day. "Blocked - need confirmation from Priya whether the archived records should keep their original timestamps or take the migration date; defaulting to original unless told otherwise" costs nothing, because it names the person, states the question, and gives a default that lets work continue if no answer arrives.
That last clause is the whole technique. A blocker with a stated default is not a blocker. It is a decision the other side can override in one word when they wake up.
Decisions needed before the next shift. Anything where the wrong assumption means rework rather than a small correction.
The written standup covers the same ground in the other direction - Done/Doing/Blocked, posted at the start of the shift so the manager reads it with their coffee rather than asking for it. The underlying principle is that written information can be found later by whoever needs it, while a live conversation only reaches whoever was awake. GitLab, which runs all-remote across more than 60 countries, publishes its own version of these practices in detail (GitLab Handbook, guide to asynchronous and non-linear working).
The same logic applies to documented decisions. If a call gets made on a video sync and never written down, the people who were asleep for it will re-litigate it within a fortnight. Documenting decisions in Notion or Confluence before they are acted on is what stops that.
What Breaks When the Overlap Is Wrong
The usual version of this section is a list of mistakes. A worked example is more useful, because the cost of a badly configured window is almost always the same shape: one unanswered question, one lost day.
A U.S. East Coast team runs a four-hour window, 8 AM to 12 PM. An engineer in Pune picks up a task at 6:30 PM local, works through it, and at 9 PM hits an ambiguity - the spec says invoices are grouped by customer, but the sample data has two records with the same customer name and different tax IDs. Are those one customer or two?
It is 10:30 AM EST in New York. The window is open. The question takes ninety seconds to answer.
Now move the window. The same team runs 8 AM to 10 AM EST only. The engineer hits the same ambiguity at 9 PM local, which is 11:30 AM in New York. The window shut half an hour ago. They have three options: guess, stop, or work on something else and come back.
If they guess wrong, the work is rebuilt tomorrow. If they stop, six hours of the shift are gone. If they switch tasks, the context is cold when they return and the task takes longer than it would have. Every one of those outcomes costs more than the two hours of overlap that were saved.
This is why the window's placement matters as much as its width. Four hours positioned where questions actually arise beats six hours positioned where they do not. The practical test: look at when your remote team's blockers get posted. If most of them land after the window closes, the window is in the wrong place.
Three related failures, briefly. Scheduling at the edge of the window puts a meeting at 2:30 AM for someone. Expecting a reply outside the window produces frustration on the U.S. side and pressure on the other. Judging by a green dot rather than delivered work measures browser tabs.
The Manager's Day
Most advice here is written for the team. The person deciding whether to do this at all is one manager wondering what their own week turns into. Concretely, this is the shape of it.
First thirty minutes of the morning. Read the overnight handoff and the written standup. Answer the blockers first, before anything else on your own list, because every hour you delay is an hour someone else is idle or guessing. It is the half hour that decides how much of everyone else's day is usable, and the one most often spent on email instead.
The rest of the window. Availability, not meetings. Questions arrive during these hours because this is when they can be asked. Treat the window as office hours rather than as a block to schedule over.
After the window closes. Set up the next cycle: assign work, record a short video walkthrough for anything with visual context, write down decisions made during the day. This is the part that determines whether tomorrow morning's handoff says "done" or "blocked".
Once a week, thirty minutes, per person. Live video. Progress, priorities, and how the person is actually doing. It is the one meeting that should not be converted to async.
Total live commitment: roughly three to four hours a week per person, front-loaded into mornings. The rest is reading and writing. Managers who find this unworkable are usually trying to run an office day with a remote team rather than a remote day.
One thing that does not appear on any schedule: isolation. A person working 6:30 PM to 3:30 AM, alone, on the far side of a silent office is the most likely person on the team to quietly disengage. Cohesion across a time gap is built by small repeated acts rather than annual events - keeping remote team members in all-hands and sprint ceremonies rather than summarising it to them afterwards, holding the monthly 1:1 about the person rather than the tickets, and naming them in public channels for good work the same way you would name someone down the hall. Belonging is what keeps the arrangement alive past the first year.
Working With Philippines-Based Teams
Two of the three configurations above are written around India, but the Philippines is the other half of this question and behaves differently.
The gap is wider - 12 to 13 hours from EST - which paradoxically makes scheduling simpler. There is no partial overlap to negotiate. An 8 AM to 5 PM EST shift is a full night shift in Manila, and that is the normal arrangement rather than a concession.
Night work aligned to U.S. hours is long-established there. The Philippine IT-BPM sector, still widely called BPO, employed roughly 1.9 million people in 2025, up about 4% year on year, and has been operating on U.S. schedules for decades (IT-BPM industry headcount, Inquirer / IBPAP). The infrastructure that supports it - transport, power backup, night-shift healthcare - exists because the sector does. That is the practical difference from markets where night work is improvised.
What it means for a U.S. manager: expect strong spoken English and customer-facing comfort, expect the full business day covered rather than a window, and expect to hold the weekly sync at the start of your day, which is the end of theirs. F5 places from Manila as well as from Pune and Rajkot, and the choice between them is usually about whether the role is voice-facing or engineering-facing rather than about cost.
The 24-Hour Production Cycle
The gap can be used rather than merely managed. The U.S. team closes out the day by assigning the next batch of work - marked-up documents, tickets written up, a recorded walkthrough of what is needed. The India or Philippines team executes overnight. The U.S. team reviews finished work the next morning.
This is genuinely useful for drawing production, code implementation against a clear spec, data processing, and report compilation. It has one hard requirement: the setup has to be complete. A task specified halfway does not come back finished, it comes back with a question, and the cycle costs a day instead of saving one. The cycle rewards teams who write well and punishes teams who rely on a quick verbal clarification.
Meeting Rules and Response Times
| Meeting type | Timing rule | Format |
|---|---|---|
| Daily standup | Written Done/Doing/Blocked, posted at shift start | Async |
| Sprint planning, review, retrospective | 9-10 AM EST | Video |
| 1:1 check-ins | 9-11 AM EST | Video |
| Ad-hoc collaboration | Recorded walkthrough plus chat | Async |
| Incident response | Any time, phone escalation | Video or phone |
| All-hands | 9 AM EST, recorded | Video |
No recurring meeting after 12 PM EST where India team members are required.
Publish response SLAs so nobody sits waiting: routine messages within the working day, direct urgent mentions within an hour, production-critical through a named alert channel with a phone fallback. The point is not the specific numbers, which vary by team. The point is that the SLA is written down, because an unstated expectation is what turns a time difference into a grievance.
The Async Stack
| Tool | What it is for |
|---|---|
| Slack or Teams | Standups, blockers, day-to-day chat |
| Loom or similar | Recorded walkthroughs where writing would take ten messages |
| Linear or Jira | Task ownership, so status is visible without asking |
| Notion or Confluence | Written decisions and documentation |
| World Time Buddy | Checking a time before scheduling |
| Google Calendar | Shared calendars with each person's local time visible |
| F5 MyApp | Weekly attendance and productivity reporting on placements |
| We360 | Daily attendance and activity data |
Vendor pricing has been left out deliberately - list prices change often enough that a published figure here would be wrong within a quarter.
Measuring Output Instead of Hours
Define what finished looks like per role and measure that. Developers: story points completed, review turnaround, defects escaping to production. Support: tickets resolved, first response time, satisfaction scores. Analysts: reports delivered on schedule and revision count. CAD and BIM roles: drawings produced, revision cycles. Operations: tasks completed against assigned, error rate.
F5 provides weekly productivity summaries and daily attendance data on placed professionals, and the useful conversation is the weekly one about output, not a monitoring dashboard.
What Good Looks Like After 90 Days
A well-structured arrangement settles into a rhythm around day 30 to 45. By day 90, the manager has stopped thinking about time zones because the structure absorbs them, blockers surface in writing and get resolved the same morning, the weekly sync is useful because async has handled everything routine, and onboarding a second person takes a fraction of the effort the first did because the documentation already exists.
The arrangements that fail are the ones that try to reproduce an office remotely: constant availability, unplanned interruptions, decisions made verbally and never written down. That pattern produces burnout on the far side and turnover within a year, which is a far more expensive outcome than any scheduling inconvenience.
See how F5 configures remote team overlap and reporting or talk to F5 about building a team across time zones.