@robertklep Thanks! A little hacking and googling, this seems to work
// Get the current Unix timestamp (epoch) in seconds
const unixTimestamp = Math.floor(Date.now() / 1000);
//console.log(unixTimestamp);
//console.log("Encoded string: "+ Buffer.from(unixTimestamp.toString()).toString('Base64'));
//console.log("Decoded string: ", decodedString);
return Buffer.from(unixTimestamp.toString()).toString('Base64');
Now, back to the search function for the rest of my query