Returns the host’s current date and time (to the nearest second) according to the system clock.
Data type returned 
Originated in 
FileMaker Pro 7.0
The format of the value returned is determined by the database file’s settings. You can use your client system’s settings in the operating system.
The client machine and host machine may be in different times zones so Get(CurrentHostTimestamp) and Get(CurrentTimestamp) may return different date/time values. Also, the current date and time are characteristics of the host system, but the format of the date and time is a characteristic of the database file.
Important  For users who are connected over a network, the Get(CurrentHostTimestamp) function can affect the performance of the database file. For example, if you use the function in an unstored calculation field, and the field is visible in a list view, each display of the field requires an additional network access. Stored calculation fields are a better use of the function. For example, if you automatically enter a timestamp for each newly created record using a stored calculation field, you minimize network access.
Returns 1/1/2014 11:30:01 AM when the system clock shows January 1, 2014 11:30:01 AM on the host machine.
Related topics 
Functions reference (category list)
Functions reference (alphabetical list)
About formulas
About functions
Defining calculation fields
Using operators in formulas