Happy Modified Julian Date 61000

On the 61 000^th day since the MJD epoch (17 November 1858), the calendar quietly rolls over another beautiful, machine-friendly milestone. Whether you are running observatories, archives, simulations, or just appreciate precise time, today is a good day to mark your logs.

MJD

61000.0

Corresponding date (UTC)

2025-11-21 00:00:00

Days since epoch

61 000 days

What is Modified Julian Date?

Explainer

Modified Julian Date (MJD) is a continuous count of days (and fractions of days) used extensively in astronomy, satellite operations, and high-precision timing systems.

Definition

MJD = JD − 2400000.5
Epoch

MJD 0 = 1858-11-17 00:00:00 (UTC)
Why “modified”?

By subtracting 2.4 million and shifting the day boundary to midnight, MJD keeps the numbers smaller and more convenient for storage, comparison, and plotting.

Where are we in MJD right now?

Live · Local Browser

Current MJD (approx.)

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Computing offset from 61000…

Your browser time is converted to MJD using: MJD ≈ UnixDays + 40587.
The badge shows how far you are from the 61000 milestone in days.

Selected milestones

MJD 00000

1858-11-17

MJD 50000

1995-10-10

MJD 60000

2023-02-25

MJD 61000

2025-11-21