time_relative_to_ref¶
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gammapy.utils.time.time_relative_to_ref(time, meta)[source]¶ Convert a time using an existing reference.
The time reference is built as MJDREFI + MJDREFF in units of MJD. The time will be converted to seconds after the reference.
Parameters: - time :
Time time to be converted
- meta : dict
dictionary with the keywords
MJDREFIandMJDREFF
Returns: - time_delta :
TimeDelta time in seconds after the reference
- time :